Welcome to your 2365 624 Inspection & testing
1.
Three resistors of value 1.0Ω ; 1.2Ω; and 1.8Ω; are connected in series across a 24V supply. What is the total current drawn in the circuit?
2.
When performing an insulation resistance test on a 2 way lighting circuit you should?
3.
The most convenient method of determining the value of the prospective short circuit current at the origin of an existing installation is by
4.
The image represents which type of earthing system?
5.
An insulation resistance test performed on a standard final circuit should be set to measure in
6.
An insulation resistance test on a large industrial installation is carried out using
7.
Before carrying out an insulation test which of the following is recommended doing
8.
Which of the following are required to be entered on page 2 of an EIC in the Nature of the supply parameters
9.
A prospective fault current test is performed on an installation and the values of the short circuit and the earth fault conditions are noted. What should be recorded in the schedule of test results?
10.
The testing of the resistance of an earth electrode can be alternatively carried out with
11.
Before energising an installation prior to performing live tests you should
12.
The resistance of the r2 on a standard domestic 32A ring final circuit wired in twin and CPC cable will result in readings
13.
A Zs reading is to be entered on a minor works certificate, what is the correct instrument used to determine this reading?
14.
If 2 different sized cables were connected together in parallel and measured using a low resistance ohmmeter, the overall resistance will
15.
The maximum value of earth electrode resistance for a TT installation protected by a 300mA RCD is given by GN3 as
16.
What is the recommended duration for the next test of a domestic building
17.
The reading in the picture was obtained during an insulation resistance test between phase, neutral and CPC. What might the result most likely mean?
18.
The Health and Safety Executive publish a document for guidance on electrical equipment known as
19.
What tests should be performed on an RCD that supplies portable equipment outside the equipotential zone
20.
The maximum value of earth electrode resistance for a TT installation protected by a 500mA RCD is given by GN3 as
21.
The Electricity at Work Regulations is classed as a?
22.
To maintain accurate readings, an instrument should
23.
Which of the following does the Electrical Safety Council recommend as the best device for proving a circuit has been safely isolated
24.
The scale indicated in the picture is used for the
25.
Which of the following is not a requirement of test probes and leads according to GS38?
26.
An insulation resistance test should record results in
27.
Leaving incandescent lamps in a circuit during an insulation resistance test may?
28.
What is the formula for calculating earth fault loop impedance?
29.
Which of the following is NOT classed as a live conductor?
30.
An intrinsically safe test instrument would be used in
31.
One of the requirements for initial verification on a completed installation is
32.
The earth lead of an earth fault loop impedance tester when recording the value of an earth electrode resistance should be connected to
33.
Which of the following is NOT a scale commonly found on an RCD tester?
34.
Test probes to GS38 should amongst other considerations
35.
Isolators are designed to operate under
By Alan Rogers